Tianjin Key Laboratory of Integrated Design and On-line Monitoring for Light Industry & Food Machinery and Equipment, College of Mechanical Engineering, Tianjin University of Science & Technology, Tianjin, China.
Medicine (Baltimore). 2021 Dec 10;100(49):e28091. doi: 10.1097/MD.0000000000028091.
Handrail type and seat height both significantly influence sit-to-stand (STS) movement. However, research on the associations between handrail type, seat height, and their cumulative effect on STS kinematics and changes in plantar pressure distribution during STS under different handrail types and seat heights is insufficient.The main objective of this study was to investigate the effect of different handrail types and seat heights on the kinematics and plantar pressure in healthy adults during STS.The study was conducted on 26 healthy young adults. Six conditions were tested: low seat (LS) and vertical handrail; LS and horizontal handrail (HH); LS and bilateral handrail; high seat (HS) and vertical handrail; HSHH; HS and bilateral handrail. The movement time, trunk tilt angle, and time from hindfoot to forefoot peak pressure were analyzed and compared.A significant difference was found in handrail type (P < .001) and seat height (P < .02) for the total movement time of STS. A significant difference was also found for the maximum trunk tilt angles (P < .001) in handrail types. There was an interaction between handrail type and seat height for the time from hindfoot to forefoot peak pressure of STS (P = .003).Using HSHH could take less time to accomplish STS movement; it also reduced the maximum trunk tilt angle and thus reduce the risk of falling; the time from hindfoot to forefoot peak pressure when using HSHH was short and subjects could accomplish STS movement easier.
扶手类型和座椅高度都显著影响坐站（STS）运动。然而，对于扶手类型、座椅高度及其对 STS 运动学的累积影响以及在不同扶手类型和座椅高度下 STS 期间足底压力分布变化的研究还不够充分。本研究的主要目的是研究不同扶手类型和座椅高度对健康成年人在 STS 期间运动学和足底压力的影响。研究对象为 26 名健康的年轻人。共测试了 6 种条件：低座椅（LS）和垂直扶手；LS 和水平扶手（HH）；LS 和双侧扶手；高座椅（HS）和垂直扶手；HSHH；HS 和双侧扶手。分析和比较了运动时间、躯干倾斜角度和足跟到前足峰值压力的时间。STS 的总运动时间在手扶类型（P<0.001）和座椅高度（P<0.02）上存在显著差异。扶手类型的最大躯干倾斜角度也存在显著差异（P<0.001）。STS 从足跟到前足峰值压力的时间在手扶类型和座椅高度之间存在交互作用（P=0.003）。使用 HSHH 可以花费更少的时间完成 STS 运动；它还降低了最大躯干倾斜角度，从而降低了跌倒的风险；使用 HSHH 时从足跟到前足峰值压力的时间较短，受试者可以更容易地完成 STS 运动。
